Shuttle box



Jan. 27, 1942. E. PFARRWALLER 2,271,205

SHUTTLE BOX Filed June 28, 1939 2 Sheets-Sheet l A TTORNEY.

Jan. 27, 1942. E, PFARRWALLER 2,271,205

SHUTTLE BOX 2 Sheets-Sheet 2 Filed June 28, 1939 TTORNEY.

y Patented Jan. 27, 1942 y SHUTTLE Box Erwin .Bfamrwallerg Winterthur, Switzerland, as-

Signor t0'. Tetas-Textil-.Finanz A. Winterthur, .,Svsritzerland,A a. ycorporation Application Jamas, issafseriaiNoi;281,516. In Switzerland 'July- Ai938.

imams. (o1. 13a-iss) The presentv application .relates to a novel ,construction .of shuttle boxes for 'looms 'for-weaving, more particularly to .shuttle boxes havingua specially .constructed mouth forasecurely receivingv the shuttles and to shuttle 'boxes which havel a .revolvable .part `for receiving a pluralityy -of` shuttles .within vvery shortgtirne intervals.

.Catching ofthe shuttles after they -havein serteda weft thread :is usually acoonripanied by moreor Vl'ess hard knocks. `If .the shuttle arrives not exactly in the directionof the vmouth of'ithe shuttle boxes, `itknocks against the solidwall` or a `solid brake tongue :which tongue must :beoperated `by .a spring.A `In order Ito reduce such'` knocks tit has been proposed to use slender land pointed shuttles. cient in :high speed v'looms operating. withvery high shuttle speeds.

liable operation of the weft Aclamps attached to the shuttles. The clamps are llikely to openand release the weft thread which `then recoils int the shedibecause 'offitselasticity kIt is.an object of the present invention topro.- vide shuttle boxes having a mouth portion `which This, however,v yis not sui'l- The Jknocks connected with l the high speed operation .cause rapid wearof'` vital :parts and seriously interfere with the re-` zo,

is elastic in a direction perpendicular sto the din rection of' the `pick `andzat atleast two portions of the: mouth :at'which portions vthere is no rigid guidepfor the g shuttles.v By thisgmeans the 'knocks of? theshuttles entering' the shuttle boxare reduced to a-negligible amount.. The elastic sides of the. shuttle ibox mouth may `be formed nby laminae ,extendingin the direction of the pick so that their elasticity-is active exclusively perpendicularly ;to` the direction of the pick..r The laminae may be freely movable adjacent'v to the mouth and rigidly connected with theinterio'r` of the shuttle box. They may be additionally ten. sioned by :resilient members, for example, frub. ber-.blocks andl :the deection of these resilient members and/.or.said laminae may `be limited by-a suitable. abutment.

According to the present invention the laminae and/or resilient means may form at the same timea lshuttlebrake A plurality of suchlaminae may be arranged in series -for consecutive engagement of the shuttles. The 'laminae and/or resilient .means ymaygbe controlled and periodicallytensioned or released by means of theloom machinery; their 'tension may be adjusted by means Vof a screw or `other rsuitable adjusting means.

'In looms *for weaving in which the shuttle acts 'in both directions the shuttle receiving box must also. operateas pickingfbox. In this; case, according to the present invention, ya shuttle guide iis'-.periodically inserted` intoithe ,shuttle box-` fordenitely guiding'the shuttle whenfit'i'sfshot;

f out of the tbox land which is removed from the;

interiorv ofv the shuttle box to .make space for an entering shuttle..r yWith such a constructiontlleI shuttle guidecan Aextend close fto the mouth ofi' the shuttle'box. f.

:In looms; for weavingin which the shuttles arer` picked fromone side only', yaccording tothe present invention, a ,plurality `of shuttle receiving boxes-made substantially v`froin'laminae are dis`` posed on a revolvingV support, body softhat as soon 'asone shuttle has entered one' box another' emptyubox can zbe'brought into the direction ofk l 'the rpick before the previously arrived shuttle has.

been'rernoved from its shuttle receiving box.

'The revolving body set forth in theiparagraph next above may carry only'thr'ee sides 'of the.

boxes connected therewith. The fourth side rof the boxes .may be formed by'la-minaewhi'chmay be tensionedby' additional resilient .means and the Atension -th'ereof may beV periodically .cony trolled andwhich laminae are' notlc'onnectedA with said revolving part. The Arevolving support,l ybe connected by'means of a torsion spring' may with a stationary part of the loom.

Further and ,otherV objectsy and advantages ofthe present invention will-be apparent from the ,accompanying speciiication and claims v'and shown fin the drawings which, by Way of illustration,` show what I now consider tobegpreferred embodiments Qfmvnvention. .lnthedrawingsr y Figure 1 is a longitudinal sectional view of va, shuttle ybox mouthaccording to the present "invention. V

- .Figure 2 is a Afront .Figure .Bfis a loneitudinalsectional .View of .a

revolving .shuttle .box .according .to the presentv invention, l

`Figure 4is afcross. sectional viewv of the revolv- ,f ingshuttle box device illustrated in Figure 3. and

' taken along line IVe-.LV of Figure 3.

Figure 5'is a cross sectional viewfof the re-` volving part of the-,shuttle box illustrated in Figure ,Sfand taken :along line V-..-V of said figure.

`lgiire .611s across sectional view of the ren volving part ofthe shuttle box :dev-ice illustrated in Figure 3 and taken along line VI-VI of said gure.

`Figure 7 is atop lView of an elastic shuttle box lview of the .shuttle lbox y mouth illustratedl in Figurell.

Like parts are designated by like numerals in all figures of the drawings.

Referring more particularly to Figures 1 and 4 2 of the drawings, the center line of the movement of the shuttles is designated by I. The channel I which receives the shuttle 2 which `is shown in dash and dotted lines is provided with walls 3. 3 is equipped with elastic laminae 4 and 5, the outward movement of which may be limited by l means of the rigid pass 3' of said mouth. Figure 2 is a front view of the mouth taken in the direction of the entering shuttle and with the elastic'laminae 4 and 5 lining the wallportions of said mouth in its most outward bent position.

Figures 3 to 7 show a modification of the present invention and relate to a shuttle box receiving device whereby the shuttles move from right to left as seen on the drawings. The shuttles are transported back from the shuttle receiving to the shuttle picking side in the direction of arrow a in a shuttle conveyor |00.

A support body I2 is revolvable about an axis I in bearings 22 and 23, the axis I0 being parallel to the direction of the shuttle movement. Two laterally movable resilient plates I3 are connected to opposite sides of said revolving body I2 by means of screws I4. Further laminae I6 are connected to other opposite sides of the revolving body I2 by means of rivets I5. Laminae I6 are provided with projections or noses I1 which can be seen in Figure 7 and which are inserted into the slots I8 of the plate members I3. Rubber blocks I0 or steel springs are inserted with aninitial tension between laminae I6 and the body I2 whereby the noses I1 are pressed on to the outer edge of the slots I8. The resilient plates or laminae I3 are'provided with projecting aps 20. The outer ends of these naps are bent inward and form the holding rim 2I which can be seen clearly in Figure and which prevents falling out of the shuttles IOI when the revolver I2 is turned.

The incoming shuttles IDI are held by stationary laminae 24 and 25. These laminae act at the same time as brakes and are completely independent from one another.

Resilient members, for example, rubber blocks 21 are individually pressed in between the laminae 24 and 25 and the plates 26 and 26' respectively. The plates 24, 26 and 25, 26' are held in the slots 29, 29' provided respectively in the plates 28 and 28. The plates 28, 28 are individually connected with the brake bodies |03, |03 by means of screws 30 and 30' respectively. The brake bodies |03 and |03 are held in position by means of screws 3| and 3l respectively and the springs 32 and 32 respectively. The position of the brake blocks is controlled by the periodically operating wedge members 35 and 35. The verti` The wedge members 35 and 35 are individually4 movably connected to the ends of reciprocatingly operating rods |04. A shaft 30 is driven by the` The flaring out mouth of the channel wards the shuttle box mouth |02.

loom driving machinery and carries the cam 40. This cam acts on roller 38 of the two arm lever 31 swinging about a fulcrum 36. The arm of the two arm lever 31 which does not carry the roller 38 is movably connected with the rod I 04. A spring 4I is provided which assures engagement of roller 38 and cam 40. Th inclination of the wedge member 35 is such that the mechanism is self-locking and the knocks exerted by the shuttle on the block |03 are not transmitted to the brake operating mechanism |04, 31, 38, etc. After the shuttle IDI has arrived in the receiving box it is brought into a desired position by a special mechanism comprising a plunger 43 operated by a lever 42. When gripper shuttles are used said shuttles are usually pushed back to- For this purpose the secondary brake 25 must be lifted so that the pushing back of the shuttle can be accomplished without much power.

The revolver I2 is held by a spring 45 in such manner that, if the spring is without tension, the shuttle boxes formed by the laminae I3 and vI6 are in a plane which is perpendicular to the plane in which the revolving axis I0 and the picking axis II lie, i. e., in a horizontal plane as seen on the drawing. The body I2 is oscillated by means of the pinion 44 and the reciprocating rack 44 cooperating therewith. The revolver I2 is locked in correct shuttle catching position by means of spring 44 which presses the nose 46 of the revolver against the pusher or plunger 43; this is illustrated in Figure 6. The pusher 43 is removed into the position 43' shown in dotted lines while the revolver I2 is turned 180 by means of rack 44 and pinion 44.

In order to reduce the power required for operating the rack 44 the spring 45 is so dimensioned that the time of one-half oscillation of the oscillating system composed of the mass of the revolver I2 and the spring 45 is equal to the motion of the rack 44.

Figures 8, 9, 10 illustrate a third embodiment of the present invention which is adapted for shuttles operating in both directions in the shed. The shuttle box is used for receiving as well as for picking the shuttles.

Four slides 5I are vertically slideably provided in casing 50 of the shuttle box, each slide 5I having inclined grooves 52. The brake bodies 53 are provided with projections 5,4 which slide in said grooves. Laminae 56 line two sides of the interior of the -shuttle box and may be resiliently pressed into the interior by means of one or a plurality of rubber blocks 55 or other resilient means having a like action. The brake members 53 are laterally moved when slide 5I or rather the inclined grooves I2 are moved up and down. By this action the brake laminae 56 are either moved into the interior of the shuttle box and against the shuttle or removed therefrom whereby the shuttle is freed. In order to prevent the laminae 56 from moving too far inward abutments 51 are provided.

When the shuttle passes into the receiving box, according to the present invention, the brakes are applied by pulling upward member 5I. Member 5I also carries the shuttle guide 58 which, when the brakes are applied, is removed so that the shuttle has plenty of space to enter the box and cannot knock against the stationary guide 59 or the removable guide 58. The resilient laminae 60 disposed at the upper side of the shuttle receiving channel absorb knocks which would otherwise act on the rigid shuttle guides.

While I believe the above described embodiments `of my inventionto be preferredlembodiments, I wish it to be understood that I donot desire to be limited to the exact'detailsof design and construction shown and described, for lobvious `modifications will occur' to aperson skilled in the art.r l'

I claim:

I. In a loom for weaving,y shuttles, .a shuttle box having rigid interior wall forming members and a mouth portion through which said-shuttles enter said box, said mouth portion having Vside g another wall of said shuttle boxes when said first walls formed by laminae extending in the direction of the movement of the shuttles and being f resilient in a direction transverse to said direction of movement, said laminae extending into the interior of said shuttle box and lining interior wall portions thereof, and additional resilient means disposed on the back of said laminae and in between said laminae and said rigid interior Wall forming members.

2. In a loom for weaving, a shuttle box as claimed in claim l, in which said additional means consist of rubber.

3. In a loom for Weaving, a shuttle box as claimed in claim l, in which said additional means consist of a plurality of rubber blocks.

4. In a loom for Weaving, shuttles, a shuttle box having rigid interior wall forming members and a mouth portion through Which said shuttles enter said box, said mouth portion having side Walls formed by laminae extending in the direction of the movement-of the shuttles and being resilient in a direction transverse to said direction of movement, said laminae extending into the interior of said shuttle box and lining side walls thereof, additional resilient means disposedV on the back of said laminae and in between said laminae and said. members, and abutment means associated with said members and with said laminae for limiting movement of said laminae towards the center of said box.

revolvable-about an axis parallel'tofthe direction ofv movement of said shuttles, resilient members connected with vsaid element and vforming thefside Walls of shuttle boxes, a yieldingl member stationary with respect to said element and forming mentioned members vare moved adjacent thereto by revolving lsaid element. f

9. Int a loom for weaving, shuttlesan element revolvableabout an axis parallel to the direction of movement 'of saidlshuttles, wall members connectedrwith said element and forming the sidewalls of. shuttle boxes, a wall member stationaryy with respect to said element and forming another wall of said shuttle boxes when said rst mentioned members are moved adjacent thereto by revolving said element, said second mentioned wall member being movable towards and from said element for engaging a shuttle received in a box and disengaging said shuttle and permitting turning of said element and removal of the said rst mentioned wall members' forming a shuttle box from said secondmentioned Wall member.

10. In a loom for Weaving, shuttles, an element revolvable about an axis parallel to the direction of movement of said shuttles, wall members connected with said element and forming the shuttles, an element revolvable about an axis 5. In a loom for weaving, shuttles, a shuttle box having a mouth portion through which said shuttles enter said box, said mouth portion having side Walls formed by laminae extending in the direction of the movement ofthe shuttles and into the interior of said box and being resilient in a direction transverse to said direction of movement, said laminae being subdivided-into a plurality of laminae adapted to be consecutively engaged by a shuttle entering the box.

6. In a loom for Weaving,.shuttles, a shuttle box having a mouth portion through which said shuttles enter said box, said'mouth portion having side walls formed by laminae extending in the direction of themovement of said shuttles and into the interior of said box and being resilient in a direction transverse to said direction of movement, and periodically acting laminae actuating means connected to and driven by said loom and periodically actuating said laminae.

7. In a loom for weaving, shuttles,v a shuttle box having a mouth portion through which said shuttles enter said box, said mouth portion having side walls formed by laminae extending in the direction of the movement of said shuttles and into the interior of said box Aand being resilient in a direction transverse to said direction of movement, and a shuttle guide means movwhich is parallel to the direction of movement of said shuttles, wall members connected with said element and forming the Side Walls of shuttle boxes, a wall member stationary with respect to said element and forming another wall of said shuttle boxes when said rst mentioned members are moved adjacent thereto by revolving said element, a torsion spring interconnecting said revolvable element and said stationary part of said loom, and an adapted to oscillate mechanism associated With and oscillating said ele-- when said iirst mentioned members are moved adjacent thereto by revolving said element, a torsion spring interconnecting said revolvable element and said stationary part of said loom, an

oscillating mechanism associated with and oscillating said element against the action of said torsionspring, and a periodically acting locking means associated with said element for periodically locking said element andfshuttle boxes in a predetermined operating position.

13. In a loom for Weaving, shuttles, an element revolvable about an axis which is parallel to the directionv of movementof said shuttles, wall members connected with said element and forming the side Walls of shuttle boxes, a wall `14. In a loom for Weaving, shuttles, shuttle box means having a mouth portion for receiving said shuttles, laminae extending in the direction of movement of the shuttles and being resilient in a direction transverse to said direction and having freely swingable outer ends forming side Wall portions of said mouth portion, and a shuttle carrier revolvably connected with said loom and being revolvable about an axis parallel to the direction of movement of said shuttles and forming part of said shuttle box.

ERWIN PFARRWALLER. 

